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Estimation of heterosis , gene action , genotypic and phenotypic in Field pea (Pisum sativum L.). | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 11, Issue 1, 2011, Pages 29-42 | ||
| Abstract | ||
| Four varieties in field pea viz, (1-Ariare , 2-Nisere , 3-Marike and 4-Messire) were used in a complete diallel Crosses, during growing season 2008/2009. Genotypes (parents and F1s hybrids) were sowing in the Field Crop Dept., College of Agriculture and forestry , Mosul University , during growing season 2009/2010 , by using Randomized Complete Block Design (R.C.B.D) with three replications , aimed to evaluate performance of hybrids and their parents to identify promising hybrids and estimate heterosis , gene action , heritability , phenotypic and genotypic correlation for studied characters. The results showed that the parents and F1s were significantly different for all studied characters , the parent (Messire) was significantly higher than what for green pods yield (567.000 kg/D) , and the parent (Nisere) for the seed yield and biological yield (210.290 and 1426.700 kg/D) respectively. Whereas the hybrid (3x1) was characterized by the highest for green pods yield (986.900 kg/D) , and the hybrid (4x3) for the seed yield and biological yield (267.190 and 1943.600 kg/D) respectively. The hybrids showed significant superiority over parents means for all the studied characters , the hybrid (3x1) was significantly higher than other for heterosis in green pods yield (458.075 kg/D) , seed yield (91.245 kg/D) and biological yield (701.955 kg/D). A significant additive variance were found for all studied characters except plant height , no. of branches per plant , no. of pods per plant and green pods yield. Narrow sense heritability was higher for: pod length and 100 seed weight which indicated additive gene action for these characters. Average degree of dominance was greater than one for all studied characters indicated over dominance control for these characters. The higher phenotypic and genotypic correlations was found between no. of days to flowering and maturity (0.869 and 0.903) respectively , the genotypic correlation was higher than phenotypic correlation for most studied characters , which assures that the gene action plays the main role in these characters and enables the vegetables growers to depending on it in selecting the hereditary structure of high production from the field pea | ||
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